Year	Number of
1990	1954.16
1991	1990.02
1992	2077.23
1993	2175.81
1994	2228.54
1995	2271.39
1996	2285.73
1997	2267.08
1998	2289.17
1999	2280.72
2000	2317.93
2001	2351.05
2002	2415.82
2003	2467.33
2004	2484.95
2005	2494.56
2006	2561.54
2007	2609.31
2008	2657.58
2009	2715.88
2010	2773.68
2011	2826.64
2012	2910.44
2013	2985.63
2014	3047.42
2015	3132.33
2016	3267.07